Hi Ahmed,If you look at the output of sh interface po40 on each switch are the packets input and output counters changing? This may help you confirm whether or not the link is working and if the output of sh etherchannel summ on the 3560 is in error....

Leolaohoo stated the big difference: LX/LH transceivers can run over multi mode fiber (with which Cisco recommends using a mode conditioning patch cable) while LH-SM transceivers can only be used over single mode fiber.Hope this helps,Jeff

Hello,I'm pretty sure trunking is the only way to do this if you are restricted by one NIC on the laptop. If the laptop has USB ports, I would look at either purchasing a USB to ethernet adapter to give the laptop a second physical network connection...

Hello,Is one of the two links of the etherchannel 100% idle? That seems unusual to me...I would check to confirm that etherchannel is functioning properly if one of the links was 100% idle.If you've already confirmed this, I think what Deepak suggest...

Hi Nick,Are the destination IP ranges that are not using the default route in 10.0.0.0/8? I think it's possible that auto-summarization might be configured and be the cause of the problem but need more information.What does the output of "show ip rou...